I don't understand the lesson we are doing but so far i am getting by.. But this one has stumped me. Can somebody try to help?
4y^2=200
With ^2 meaning to the second power.
2007-10-02 21:30:22 · 6 answers · asked by dolphingirl_862003 2 in Science & Mathematics ➔ Mathematics
You first need to simplify the equation by dividing both sides by 4.
(4y^2) / 4 = 200 / 4
Then the equation is simplified to
y^2 = 50
which is equivalent to saying
y * y = 50
Here is the small glitch. There is no whole number when multiplied by itself gives 50. The closest you can get is 7 (7^7= 49).
If you are looking for non-whole numbers,
y = (50)^(1/2)
y = 7.07 (to 2 decimal places)
2007-10-02 21:54:33 · answer #1 · answered by MathMann 1 · 1⤊ 0⤋
4y^2=200
So you find y^2 by dividing the equation by 4.
You end up with y^2=50.
Then to find y take the square root of 50 which is 7.07 (3 s.f.)
2007-10-02 21:42:18 · answer #2 · answered by milky s 4 · 1⤊ 0⤋
y ² = 50
y = â 50
y = ± 5 â2
2007-10-02 23:06:51 · answer #3 · answered by Como 7 · 2⤊ 0⤋
divide both sides by 4, you get:
y^2 = 50
get the square root:
y= 50^0.5 = (25*2)^0.5
ans: y = 5*2^0.5 or -5*2^0.5 (sorry, don't know how else to type the square root sign, but this is just the same)
since roots can be positive or negative.
hope this helps
2007-10-02 22:19:46 · answer #4 · answered by soul_burner_29 2 · 0⤊ 1⤋
first you divide 200 by 4, then you take the sqaure root of the (200/4)
2007-10-02 21:36:38 · answer #5 · answered by hammy 3 · 0⤊ 1⤋
step 1:y*y=50
step 2:y=sqaure root 50
step 3:y=7.07
this is it....if you are expecting any other ans please do add to your question
2007-10-02 21:41:24 · answer #6 · answered by coolbunty_87 1 · 0⤊ 0⤋